Ok so the speedo and mile clock stoped working the other day. They havent moved since. I tried using the computer on the climate control to display the speed but this also wont work. Does this suggest that its the speedo sensor rather than the dash that is not working correctly? If so how easy is it to change and what does the part cost? I tried searching but found not too much on the topic so if anyone could help it would be greatly appreciated. Thanks Tom.